American Express (Amex) is developing an AI-driven commerce system that enables AI agents to shop and transact on behalf of users, though it is currently limited to its payment network and lacks transparency in transaction validation. This initiative, known as the Agentic Commerce Experiences (ACE) developer kit, addresses critical issues such as trust and identity verification in agentic commerce, which experts believe are vital for broader acceptance of such technology. While projects like ACE and Google’s Agent Pay Protocol (AP2) aim for improved interoperability, there remain significant verification gaps in human identity that could lead to risks like fraud and chargebacks. Amex’s introduction of Agent Purchase Protection also adds a layer of security for cardmembers against potential errors in AI transactions.

Luke Gebb: Luke Gebb serves as Executive Vice President and Global Head of Innovation at American Express. He has highlighted the ACE developer kit as bringing an issuer’s perspective to agentic commerce, emphasizing trust and security as essential for the space’s advancement. Gebb explained how the kit’s features like bounded payment tokens and intent proofs provide the missing transaction control.
American Express: American Express operates as both a card issuer and proprietary payment network, providing closed-loop control over transactions unlike networks such as Visa and Mastercard that rely on bank partnerships. It launched the Agentic Commerce Experiences (ACE) developer kit to enable AI agents to securely shop and pay on behalf of users, featuring intent contracts, single-use tokens, and validation layers. This initiative addresses critical trust, security, and accountability challenges in agentic commerce.
ACE developer kit: The ACE developer kit equips developers with Amex services for agentic transactions, including proof-of-intent tokens and single-use payment credentials tied to user constraints. It enables mutual agent verification and post-transaction intent matching within Amex’s network. This tool positions Amex to lead in accountable AI commerce experiences.
Agent Pay Protocol: Agent Pay Protocol (AP2) is an open, payment-method-agnostic standard originally developed by Google for secure AI agent transactions in agentic commerce. Google recently donated it to the FIDO Alliance along with AP2 v0.2, which introduces support for human-not-present payments and interoperable cryptographic mandates. Amex engages with AP2 for interoperability alongside its proprietary ACE system.
Raj Ananthanpillai: Raj Ananthanpillai is the founder and CEO of Trua, a provider of identity and verification systems. He pointed out that protocols like ACE excel in payment mechanics but leave human validation opaque, increasing risks of fraud and chargebacks. Ananthanpillai advocates for cryptographic proofs linking agents to verified human owners in agentic commerce.
Agentic Commerce Experiences: Agentic Commerce Experiences (ACE) is American Express’s developer framework for AI-driven shopping and payments. It integrates agent registration, account enablement, intent intelligence, payment credentials, and cart context to enforce user-defined transaction boundaries. The kit tackles validation and dispute resolution to foster trust in agent-led commerce.

`json
{
“Verification Gaps”: “Experts note that agentic commerce protocols handle fund movement well but require stronger upstream human identity links to prevent repudiation risks.”,
“Product Innovation”: “American Express is advancing agentic commerce through its Agentic Commerce Experiences (ACE) kit, enabling integrated services like agent registration and intent intelligence.”,
“Standards Advancement”: “Amex participates in Google’s Agent Pay Protocol (AP2) projects aimed at promoting interoperability within agentic commerce.”
}
`